Authorities say one man suffered burns to his legs in a gas well explosion in eastern Oklahoma.

Pittsburg County Emergency Management Director Kevin Enloe says the man was taken to a Tulsa hospital in stable condition Thursday after the blast at Trinity Resources near Quinton, about 100 miles southeast of Tulsa.

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Earlier reports suggested numerous people were hurt and that the explosion occurred in an oil field.

Enloe says the explosion occurred when the employee opened a valve on a well that had undergone maintenance work and two other wells also caught fire before being extinguished. He says the cause of the blast was not immediately known.

Trinity released a statement saying the company followed established safety procedures and that an investigation is underway to determine what caused the blast.

A state road in the area was closed for a time after the blast, but has reopened.